Why did he block me from fb?

Hello I met this guy from work and I added him on fb so he send me a message and we started talking, and he told me if I wanted to kick it and I said yes ! So one day he said if I wanted to kick it and I said I couldn't because I was working, and he said that he though it was my day off and I said no I think you confused me to another chick and so he got pissed off and blocked me and he said to loose his # why :(((